CN113794077A

CN113794077A - Changeover plug and charger

Info

Publication number: CN113794077A
Application number: CN202111015154.4A
Authority: CN
Inventors: 高雷迪; 龙海岸; 成励翊; 王清旺
Original assignee: Ningbo Gongniu Digital Technology Co Ltd
Current assignee: Ningbo Gongniu Digital Technology Co Ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2021-12-14

Abstract

The invention provides a conversion plug and a charger, and relates to the technical field of charging equipment. Conversion plug includes main part and conversion head, the main part includes the casing and sets up two at least elastic clamping pieces in the casing, the conversion head includes roating seat and two at least bolts, roating seat and the cooperation of the rotatory joint of casing, two at least bolts all cooperate with the roating seat is articulated, so that two at least bolts can launch and accomodate relative roating seat, elastic clamping piece corresponds the setting with the bolt, when the bolt launches, the one end of bolt can cooperate with elastic clamping piece centre gripping, form safety restraint, rotate with the relative casing of restriction conversion head, avoid conversion plug to break away from with the main part when using, the security of using improves.

Description

Changeover plug and charger

Technical Field

The invention relates to the technical field of charging equipment, in particular to a conversion plug and a charger.

Background

The charging device supplies power to the electronic product by being connected with the socket. The existing charging device includes a plug head connected to a main body provided with a circuit board, which can be used for an external socket.

With the development of society, the frequency of people going on business and traveling is more frequent across regions and countries, but the standards of plugs in different countries and some regions are different, so that the portable charging equipment cannot be adapted. From this, set up the bolt head to the grafting cooperation with the main part among the prior art to realize the adaptation to different sockets. However, the main body and the plug head are easy to pull away in the using process, so that metal parts connected with the plug head and the main body are exposed, and great potential safety hazards exist.

Disclosure of Invention

In order to overcome the defects in the prior art, the application provides the changeover plug and the charger, which are used for solving the problems in the prior art.

To achieve the above object, in a first aspect, the present application provides a conversion plug, including a main body and a conversion head;

the main body comprises a shell and at least two elastic clamping pieces arranged in the shell;

the conversion head comprises a rotating seat and at least two bolts, the rotating seat is in rotating clamping fit with the shell, and the at least two bolts are in hinged fit with the rotating seat so that the at least two bolts can be unfolded and stored relative to the rotating seat;

the elastic clamping pieces are arranged corresponding to the bolts, and when the bolts are unfolded, one ends of the bolts can be in clamping fit with the elastic clamping pieces, so that the conversion heads are limited to rotate relative to the shell.

With reference to the first aspect, in a possible implementation manner, a side of the housing close to the rotating base is provided with positioning holes for allowing the insertion pins to pass through, and the number of the positioning holes corresponds to the number of the insertion pins.

With reference to the first aspect, in a possible implementation manner, the elastic clamping piece is made of an electrically conductive material, the elastic clamping piece includes two oppositely disposed clamping surfaces, the end of the bolt, which is in clamping fit with the elastic clamping piece, has two oppositely disposed contact wide surfaces, and when the elastic clamping piece is in clamping fit with the bolt, the two clamping surfaces are respectively in butt joint with the two contact wide surfaces.

With reference to the first aspect, in a possible implementation manner, a side surface of the rotating seat facing the housing is provided with a buckle, the housing is provided with a catching groove corresponding to the buckle, and when the rotating seat is engaged with the rotating clamp of the housing, the buckle is engaged with the catching groove.

With reference to the first aspect, in a possible implementation manner, one end of the buckle, which is far away from the rotary seat, is provided with a limiting protrusion, the buckling groove includes an unfastening section and a locking section which are sequentially communicated, and a width of the unfastening section is greater than a width of the locking section, wherein the unfastening section can allow the limiting protrusion to pass through, and the locking section limits the limiting protrusion to pass through.

With reference to the first aspect, in a possible implementation manner, the conversion head further includes a hinge seat, the number of the latches is two, two latches are disposed on the hinge seat, and the two latches are in hinge fit with the rotation seat through the hinge seat.

With reference to the first aspect, in a possible implementation manner, a positioning protrusion is disposed on the hinge seat, and an elastic arm is disposed on the rotating seat, and the elastic arm is abutted against and matched with the positioning protrusion to limit free rotation of the hinge seat.

With reference to the first aspect, in one possible embodiment, the outer circumference of the rotating base is provided with an anti-slip structure.

With reference to the first aspect, in one possible implementation, the bolt comprises a national, american, european, japanese or australian standard bolt.

In a second aspect, the present application also provides a charger including the transfer plug provided in the first aspect.

Compare in prior art, the beneficial effect of this application:

the application provides a changeover plug through the articulated cooperation of bolt and roating seat, realizes the expansion of bolt and accomodates, still cooperates through roating seat and the rotatory joint of casing simultaneously, realizes the dismantlement of whole conversion head and changes. During the use, expand bolt relative rotation seat, at this moment, the elastic clamping piece that sets up in the main part forms the centre gripping cooperation with the contact end of bolt, because the quantity of bolt is two at least, forms the centre gripping cooperation back when two wherein bolts and the elastic clamping piece that corresponds, can form safety restraint, and then the rotation of the relative casing of restriction conversion head, avoids conversion plug to break away from with the main part when using, improves the security of using.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic perspective view illustrating an unfolded state of a patch plug according to an embodiment of the present disclosure;

fig. 2 is a schematic perspective view illustrating a received state of a conversion plug according to an embodiment of the present disclosure;

FIG. 3 illustrates an exploded view of the transition plug of FIG. 1;

FIG. 4 shows an enlarged partial schematic view at A in FIG. 3;

FIG. 5 is a schematic perspective view of a plug assembly of the patch plug of FIG. 3;

FIG. 6 illustrates a front view of the conversion plug of FIG. 1;

FIG. 7 shows a partial cross-sectional view taken along line B-B of FIG. 6;

FIG. 8 shows an enlarged partial schematic view at C of FIG. 7;

FIG. 9 is a perspective view of the transition plug of FIG. 1 with the plug pins deployed;

FIG. 10 shows a cross-sectional view in the direction D-D of the transducing head of FIG. 9;

FIG. 11 shows a cross-sectional view taken along line D-D of the conversion head of FIG. 9 in the latch-receiving position.

Description of the main element symbols:

100-a body; 110-a housing; 111-a housing; 1110 — a mounting side; 1111-a first positioning hole; 1112-a catching groove; 112-face cover; 1120-a socket; 120-a circuit board; 121-a resilient clip; 1210-clamping surface; 200-a conversion head; 210-a rotating base; 211-bottom cover; 2110-a receiving groove; 2111-anti-skid construction; 2112-first support cartridge; 212-a cover plate; 2120-a second positioning hole; 2121-buckling; 2121 a-limit protrusion; 1112 a-a trip section; 1112 b-a locking segment; 2122-a resilient arm; 2123-a second support cartridge; 220-a latch assembly; 221-a hinged seat; 2210-positioning projections; 222-a latch; 2220-a plug end; 2221-contact end; 2222-contact broadside.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Examples

Referring to fig. 1 and fig. 2, the adaptor plug of the present embodiment includes a main body 100 and an adaptor 200, wherein the adaptor 200 is detachably connected to the main body 100.

Referring to fig. 1 and 3, the main body 100 includes a housing 110, a circuit board 120, and at least two elastic clips 121 disposed on the circuit board 120. The circuit board 120 is disposed in the housing 110, the elastic clip 121 is detachably mounted on the circuit board 120, and the elastic clip 121 is made of a conductive material, such as a copper material, and the elastic clip 121 is electrically connected to the circuit board 120. Optionally, the resilient clip 121 is a metal clip.

In the present embodiment, the number of the elastic clips 121 is illustrated as two.

Referring to fig. 1, 3 and 5, the adaptor 200 includes a rotating base 210 and a latch assembly 220, the latch assembly 220 includes a hinge base 221 and at least two latches 222, in this embodiment, the number of the latches 222 corresponds to the number of the elastic clips 121, and is also set to be two. Wherein, the rotating base 210 is matched with the shell 110 in a rotating and clamping manner, so that the rotating base 210 is detachably connected with the shell 110. The hinge seat 221 is disposed in the rotating seat 210, and the hinge seat 221 is in hinge fit with the rotating seat 210, that is, the hinge seat 221 can rotate around its own axis. The two pins 222 are respectively disposed at two ends of the hinge seat 221, and one of the two pins 222 is pulled to drive the hinge seat 221 to rotate. Due to the arrangement of the hinge seat 221, on one hand, the synchronous movement of the two bolts 222 can be realized; on the other hand, the two latches 222 can be unfolded and folded with respect to the rotary base 210.

Referring to fig. 3 and 5, two ends of the plug 222 along the length direction are a plug end 2220 and a contact end 2221, wherein the plug end 2220 is used for being matched with the socket, and the contact end 2221 is used for being matched with the elastic clip 121.

Referring to fig. 1, 3, 6 and 7, when the two pins 222 are unfolded relative to the rotating base 210, the inserting ends 2220 of the pins 222 extend from one side of the rotating base 210 to a direction away from the housing 110, the corresponding contact ends 2221 penetrate into the housing 110 from the other side of the rotating base 210, and the contact ends 2221 and the corresponding elastic clips 121 form clamping fit to achieve contact conduction and form rotation restriction on the pins 222 to limit rotation of the converter head 200, so that the converter plug can be normally used.

Referring to fig. 2, 3, 7 and 11, when the two pins 222 are received in the rotating base 210, the corresponding inserting end 2220 and the corresponding contact end 2221 are received in the rotating base 210, at this time, the contact end 2221 is released from the clamping fit with the elastic clip 121, and the contact end 2221 is disconnected from the elastic clip 121, i.e., is not conductive. When the plug 222 is in the storage state, on one hand, the size of the conversion plug along the expansion direction of the plug 222 is reduced, which is convenient for the storage and carrying of the conversion plug; on the other hand, by rotating the conversion head 200, the conversion head 200 can be detached from the main body 100 to replace the conversion head 200.

Alternatively, to accommodate different regional and national plug standards, the plug pins 222 include national, U.S., European, Japanese, or Australian plug pins 222. Furthermore, the different rotary bases 210 are provided with the different or same standard plugs 222, so that the whole conversion head 200 can be disassembled and replaced when being replaced, which is convenient and fast.

Referring to fig. 7 and 8, further, the elastic clip 121 includes two opposite clamping surfaces 1210, and the two clamping surfaces 1210 are disposed close to each other. The contact end 2221 includes two contact wide surfaces 2222 arranged oppositely, and specifically, the cross section of the contact end 2221 in the width direction is rectangular, so that the surface where the long side of the rectangle is located is the contact wide surface 2222.

When the elastic clip 121 is clamped and matched with the contact end 2221, the two clamping surfaces 1210 are respectively abutted against the two contact wide surfaces 2222. In this embodiment, two clamping surfaces 1210 are respectively abutted against the two contact wide surfaces 2222, so as to achieve the purpose of clamping and matching: on one hand, the stability of the elastic clamping piece 121 for clamping the contact end 2221 is increased, the rotation of the conversion head 200 relative to the shell 110 is better limited, the conversion head 200 is prevented from being separated from the main body 100 when the conversion plug is used, and the use safety is further improved; on the other hand, the contact area between the elastic clamping piece 121 and the contact end 2221 is increased, so that the contact conduction is realized more stably, and therefore when the conversion plug is applied to a charger, a high-power charger can be manufactured, and the charging safety of the high-power charger is further guaranteed.

Optionally, the two clamping surfaces 1210 respectively and the two contact wide surfaces 2222 are respectively in surface fit, so as to further increase the contact area between the elastic clip 121 and the contact end 2221.

Referring to fig. 3, the housing 110 includes a casing 111 and a cover 112, the casing 111 is a semi-enclosed structure, and a space for mounting the circuit board 120 is formed inside the casing 111. The surface cover 112 is detachably disposed on the opening side of the housing 111, and the surface cover 112 is provided with a plug port 1120 allowing a power line to pass through, and the power line can pass through the plug port 1120 to be electrically connected to the circuit board 120.

Referring to fig. 3, fig. 4 and fig. 8, further, the adapter 200 is disposed on a mounting side 1110 of the housing 111 away from the cover 112, the mounting side 1110 is provided with two first positioning holes 1111, and the two first positioning holes 1111 are respectively opposite to the contact ends 2221 of the two latches 222. The first positioning hole 1111 is formed in a long bar shape to facilitate passage of the contact end 2221 of the latch 222 when the latch 222 is unfolded and stored. Meanwhile, the two first positioning holes 1111 are disposed, so that when the plug 222 is in the unfolded state, the rotation of the adaptor 200 can be further limited, and the adaptor 200 is prevented from being separated from the main body 100 when the adaptor is used, thereby improving the safety in use.

Alternatively, the shape of the housing 111 is prism-shaped, cylindrical, spherical, etc., and it should be understood that the above is only illustrative and not intended to limit the scope of the present application.

Referring to fig. 9 and 10, the rotating base 210 includes a bottom cover 211 and a cover plate 212 covering the bottom cover 211, wherein the opposite surfaces of the bottom cover 211 and the cover plate 212 are respectively provided with a first supporting clamping seat 2112 and a second supporting clamping seat 2123, and when the cover plate 212 is engaged with the bottom cover 211 and a space for installing the hinge seat 221 and the pin 222 is formed inside, the first supporting clamping seat 2112 and the second supporting clamping seat 2123 are close to each other and are in hinge engagement with the hinge seat 221. Optionally, the cover plate 212 is snap-fit with the bottom cover 211.

Referring to fig. 4, 7, 8 and 9, further, two second positioning holes 2120 are formed on the cover plate 212 and are opposite to the two first positioning holes 1111. The second positioning hole 2120 is also a long hole, and the second positioning hole 2120 can allow the contact end 2221 of the plug 222 to pass through.

When the rotary base 210 is engaged with the housing 110, the cover 212 faces the mounting side 1110 of the housing 111 and is tightly attached to the mounting side 1110. In the present embodiment, three hooks 2121 are arranged on the side of the cover plate 212 facing the mounting side 1110, and the three hooks 2121 are located on a virtual circle. Correspondingly, three circular-arc-shaped catching grooves 1112 are arranged on the mounting side 1110, and the three catching grooves 1112 are also located on a virtual circle.

Further, a limiting protrusion 2121a is disposed at an end of the buckle 2121 away from the cover plate 212, the catching groove 1112 comprises an unlocking section 1112a and a locking section 1112b which are sequentially communicated, and a width of the unlocking section 1112a is greater than a width of the locking section 1112b, wherein the unlocking section 1112a can allow the limiting protrusion 2121a to pass through, and the locking section 1112b limits the limiting protrusion 2121a to pass through.

When the latch 2121 moves from the releasing segment 1112a to the locking segment 1112b, the limiting protrusion 2121a abuts against an inner wall of the housing 110 to limit the whole of the transducing head 200 from being disengaged from the housing 110 of the main body 100.

When the rotary seat 210 is engaged with the housing 110, the three fasteners 2121 are aligned with and inserted into the releasing segments 1112a of the three fastening grooves 1112, and the entire conversion head 200 is rotated, so that the fasteners 2121 move from the releasing segments 1112a of the fastening grooves 1112 to the fastening segments 1112b, and at this time, the limiting protrusions 2121a abut against the inner wall of the housing 111, so that the fasteners 2121 engage with the fastening grooves 1112 to limit the movement of the conversion head 200 in the directions away from and close to the housing 111, and further limit the separation of the conversion head 200 from the housing 111. At this time, the first positioning hole 1111 is aligned with the second positioning hole 2120, so that the latch 222 can be conveniently unfolded and stored; when the adapter 200 needs to be disassembled, the latch 222 is first received, and then the adapter 200 is rotated in the opposite direction, so that the buckle 2121 moves from the locking segment 1112b of the buckling groove 1112 to the releasing segment 1112a, and the adapter 200 is pulled in the direction away from the housing, so that the whole adapter 200 can be disassembled.

Referring to fig. 3 and 6, further, a receiving groove 2110 for receiving the plug 222 is disposed on a side of the bottom cover 211 away from the cover plate 212, and one end of the receiving groove 2110 penetrates through a side wall surface of an outer periphery of the bottom cover 211.

Referring to fig. 2, 3 and 11, in some embodiments, when the latch 222 is received in the receiving slot 2110, the inserting end 2220 of the latch 222 protrudes from the side wall surface of the outer periphery of the bottom cover 211, so that the latch 222 can be pulled to be unfolded, and the latch 222 can be used as a force arm to facilitate the detachment and installation of the adaptor 200 when the whole adaptor 200 is rotated.

Referring to fig. 9, in other embodiments, an anti-slip structure 2111, such as an anti-slip pattern or an anti-slip glue layer, is disposed on a side wall surface of the outer periphery of the bottom cover 211 to increase friction when the conversion head 200 rotates, so as to facilitate detachment and installation of the conversion head 200.

Alternatively, the anti-skid pattern is a line stripe, a grid stripe, or a dense bump, etc., which are merely examples and should not be construed as a limitation to the scope of the present application.

In still other embodiments, providing the bottom cover 211 as a prism or other irregular shape may also facilitate the removal and installation of the transducing head 200.

Referring to fig. 5, 9, 10 and 11, further, the hinge seat 221 is provided with a positioning protrusion 2210, the cover plate 212 of the rotation seat 210 is provided with a resilient arm 2122, one end of the resilient arm 2122 is connected to the cover plate 212, and the other end is a cantilever end. The elastic arm 2122 is engaged with the positioning protrusion 2210 to provide resistance for switching between the extended and retracted states of the latch 222, so as to limit the hinge seat 221 from freely rotating.

As shown in fig. 10 and 11, the clockwise rotation direction of the hinge seat 221 is defined as the receiving direction of the latch 222, and the counterclockwise rotation direction of the hinge seat 221 is defined as the extending direction of the latch 222. As shown in fig. 11, when the latch 222 is in the storage state, the elastic arm 2122 abuts against the left side surface of the positioning protrusion 2210, so that the elastic arm 2122 restricts the hinge seat 221 from automatically rotating in the counterclockwise direction without intervention of an external force, so as to prevent the latch 222 from automatically spreading; as shown in fig. 10, when the pin 222 is pulled to drive the hinge seat 221 to rotate counterclockwise, the positioning protrusion 2210 pushes against the elastic arm 2122, when the highest point of the positioning protrusion 2210 rotates over the elastic arm 2122, the right side surface of the positioning protrusion 2210 keeps abutting against the elastic arm 2122, thereby completing the unfolding of the pin 222, and in the unfolded state of the pin 222, the elastic arm 2122 restricts the hinge seat 221 from automatically rotating clockwise to prevent the pin 222 from automatically accommodating. And then the setting of elastic arm 2122 improves the stability of bolt 222 expansion and state of accomodating, further promotes user experience.

With reference to fig. 1 to 11, compared with the prior art, the conversion plug provided by the present embodiment has the following advantages:

(1) the plug 222 in the conversion head 200 is designed to be capable of being accommodated, so that the size of the whole conversion head is reduced, and the conversion head is convenient to carry;

(2) the conversion head 200 in the conversion plug is in rotary clamping fit with the shell 110 of the main body 100, so that the conversion head 200 is detached and replaced, and the problem of charging adaptation is solved;

(3) the two pins 222 form a clamping fit with the corresponding elastic clips 121 to form a safety restriction, so as to limit the rotation of the rotating base 210, prevent the conversion head 200 from being separated from the main body 100 when the conversion plug is used, and improve the use safety;

(4) the elastic clamping piece 121 and the contact end 2221 surface form a contact conducting process through clamping, complex jumper connection is omitted, the assembling process is simpler and more convenient, the production efficiency is higher, and the conductive clamp is applied to a charger so as to optimize the conducting process of the high-power charger;

(5) the elastic clamping piece 121 is respectively abutted against the two contact wide surfaces 2222 through the two clamping surfaces 1210, so that the clamping force and the conductive contact area are effectively increased, and the charging safety of a high-power charger is guaranteed when the elastic clamping piece is applied to the charger.

Therefore, the embodiment also provides a charger, and the conversion plug provided by the embodiment is applied.

Optionally, the charger further comprises a power line, wherein the power line is mated with the main body 100 through a USB interface.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A conversion plug is characterized by comprising a main body and a conversion head;

2. The conversion plug as claimed in claim 1, wherein a side of the housing near the rotary seat is provided with positioning holes for allowing the pins to pass through, and the number of the positioning holes corresponds to the number of the pins.

3. The conversion plug of claim 1, wherein the resilient clip is made of an electrically conductive material, the resilient clip includes two oppositely disposed clamping surfaces, and the end of the pin in clamping engagement with the resilient clip has two oppositely disposed contact surfaces, and when the resilient clip is in clamping engagement with the pin, the two clamping surfaces abut against the two contact surfaces, respectively.

4. The conversion plug according to claim 1, wherein a buckle is disposed on a side surface of the rotary seat facing the housing, a catching groove corresponding to the buckle is disposed on the housing, and when the rotary seat is engaged with the rotary buckle of the housing, the buckle is engaged with the catching groove.

5. The conversion plug according to claim 4, wherein a limiting protrusion is disposed at an end of the buckle away from the rotating base, the buckling groove includes an unlocking section and a locking section which are sequentially communicated, and a width of the unlocking section is greater than a width of the locking section, wherein the unlocking section can allow the limiting protrusion to pass through, and the locking section limits the limiting protrusion to pass through.

6. The conversion plug according to claim 1, wherein the conversion head further comprises two hinge seats, two of the pins are disposed on the hinge seats, and the two pins are in hinge fit with the rotary seat through the hinge seats.

7. The conversion plug according to claim 6, wherein the hinge base is provided with a positioning protrusion, and the rotating base is provided with a resilient arm, and the resilient arm is in abutting engagement with the positioning protrusion to limit the hinge base from freely rotating.

8. The conversion plug according to claim 1, wherein an outer circumference of the rotary base is provided with an anti-slip structure.

9. The transition plug of claim 1, wherein the plug comprises a national, American, European, Japanese, or Australian standard plug.

10. A charger, characterized by comprising a conversion plug according to any one of claims 1 to 9.